Terminal fastening.



O. W. BECK.

TERMINAL PASTENING. K APPLIUATIUN FILED 55335.21. 1912.

Ly?, Patented m1111913.

man

/ /lVl/E/VTOR i Fig. 1 except for the fact that there is no ATENT oEEICE.

CHARLES w. BECK, or' ECCKVILLE CENTER, NEWYCRK, AssIeNon. To MICHIGAN ,Moron SPECIALTIES COMPANY, on DETROIT, MICHIGAN, A CORPORATION or MICHIGAN.

Specification of I .etters Patent.

'.IENMINAI.y EASTENING.

To all whom t may concern:

vBe 'it known that lf, CHARLES 'W. BECK, who am a citizen4 of the United States, residing lat Rockville Center, in the county of Nassau and State of New York, have invented certain new and useful improvements in Terminal Fastenings, of which the following is a specification.

This invention relates to electric terminal fastenings, and has forits/ object an improved device adapted not only for quick and easy attachment to and detachment from the stem of a spark plug or binding post, but also the easy and firm insertion of the stem portion of the external "engaging piece in the Vend of the wire-carrying cable.

. Tn the drawings z-Figure 1 is an elevation, largely sectional, of a clip audits adjacent ca'ble end, showing the'relative position of all the parts.. Fig. 2 is similar to ber layer ,or covering over the rubber por- .tionof the cable.v Fig. Bis a perspective of a clip and cable connection of slightly moditied form. Fig. 4. i's-an elevation, largely sectional, showing lthe structural -details of. this vmodified form. Fig. 5 is an elevational'.` view of amodified 'form of stem-engaging't Clip. Fig. 6 is`an. elevation of the device of Fig. 5 from aj position at right angles to that of Fig.' 5.'

A represents the wire of a cable, which is insulated by the rubber lcovering B,

which may if desired be in turn further covered by the ber or hard rubber cover- .ing C. Into the rubber B at the end ofthe cable is forced the threaded end 'of the clip member D, whosefouter lportionis adapte to engage about -the stem f; a spark plug or abinding post. The benter of this inner `end of the clip is hollowed out, as atj E, for the engagement therewithin .in order to secure contact with the metal fastenings of the end of the wire A, about which; until the end of the' clip was forced thereabout, the rubber covering B closely engaged. The entering end F of the fasten-- ing is preferably beveled or sharpened.

The type of clip illustrated in Figs-l, 2,

3, and 4, has its outer' end in the form of a loo G, which is partially split by the kerfs H leaving one or more complete rings J and at least'one divided portion K, whose points" L maybe slightly inbent, so as to resiliently engage aboutavsparkplug stem Patented Jan.'7,1913. I Applicationled February 21, 1912. Serial No. 679,004.`l

over which the broken rings J engage.

freely, thus furnishing'a resistance toits dlsplacement from position on the stem unless 1t be intended to remove it by a positive and suiiciently firm pull. l

In the type of clip illustrated in Figs. 3 and there is inserted in the hard rubber covering or sleeve onthe cable end,so that its per orated center portion lies almost flush with the end of the cable, a cap N Whose. slightly fianged edge P extends sufflclently into the inner face of the covering C to be held firmly in place. It is obvious that this typeis principally adapted for use with a cable designed especially for rather hard usage; its oiiice is to insure solidity and firmness of the assembled clip i and'cable parts.

inthe modified fom iuusaated 'in Figs.

5 and 6 there is substituted for the kerfed the clip. This is so '.cut as' to` engage with suicient resiliency over the vstem of the spark plug. or binding post with its cut awa; center portion Y. It is held in place by t e tongues X, which rise from theouter end ofthe body of the clip, and are bent over the inserted inner end of the sheet metal stem-engaging portion after that has been forced into place.

What I claim 1s 1.. ln an electric terminal fastening, in comblnatlon with an insulated cable end, a centrally hollowed end member adapted to carry a stem-engaging clip, and engaging about the Wire and within the insulation thereof, substantially as described;

,. 2. An electric terminal fastening, hav- -ing, lin combination with an insulated cable end, al body portion having a beveled inner end, adapted to engage about thewire portion of the cable. and within the insulating material, the outer end of -said body por- ,tion being adapted to support a stem-engaging clip, substantially as described.

3. An electric terminal fastening, comprising an externally threaded and centrallyyholhiwed member adapted to engage Within the insulating portion of a cable end and about the\vvire thereof, the outer end being adapted to removably engage over the stern of a spark plug, vsubstantially as described.

4. An electric terminal fastenin?, comprising a body portion having a ngitudinall extending aperture into which the end o a current-carrying wire may engage,

5 and adapted to support at its end opposite that entered by thev Wire a stem-engaging member, substantially as described.

5. In 'an electric terminal fastening, in

combination with a centrally bored stem 10 portion adapted to engage about the end of a current-carrying wire and Within the' insulating material of the cable of which saidA wire is a part, an apertured cap member through which said stem portion engages, adapted to engage over and about the" end 15 of the cable, substantially as described.

In testimony whereof I aflixv my signature in presence of two witnesses.

CHARLES W. BECK.` Witnesses:

WILLIAM M.' SWAN, SARAH J. ANTAYA. 

